Beginning next month restaurants with 20 or more locations in California will have to post calorie information on their menus. The requirement is part of a two year old law targeting obesity.

A Big Mac has 540 calories. A kid's meal with Chicken McNuggets,
small fries, and chocolate milk has almost 600 calories. That's
nearly half the recommended calories in a whole day's meals for a
child.

McDonald's already posts nutritional information for all its
menu items on its website, but the numbers will soon be shown next
to photos of those big juicy burgers in the restaurants.

Daniel Conway is with the California Restaurant Association. He
says nutritional information can help people make healthier
decisions. But, he says it's only part of the solution in fighting
obesity.

"Providing information doesn't necessarily dictate people's
behavior. I've heard from some people that if it's their birthday
or their anniversary or something they don't care how many calories
are on whatever they're eating."

Restaurants that don't comply can be fined between 50 and 500
dollars. But Conway says enforcement of the law will be rolled out
slowly over the next six months.